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arXiv · 1101.5416

Long-Range Superharmonic Josephson Current

Luka Trifunovic
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Abstract

We consider a long superconductor-ferromagnet-superconductor junction with one spin-active region. It is shown that an \textit{odd} number of Cooper pairs cannot have a long-range propagation when there is \textit{only one} spin-active region. When temperature is much lower than the Thouless energy, the coherent transport of \textit{two} Cooper pairs becomes dominant process and the \textit{superharmonic} current-phase relation is obtained ($I\propto\sin2ϕ$).

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Luka Trifunovic. 2011-07-23. Long-Range Superharmonic Josephson Current. https://doi.org/10.1103/physrevlett.107.047001

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